As the largest solid waste in China,the rational disposal and resource utilization of coal gangue are directly related to the ecological environment of the mining area.Mixing coal gangue into concrete for recycling to form coal gangue concrete has become the main way of resource utilization.In this paper,the physical and chemical properties of coal gangue are introduced,and the effects of coal gangue on the compressive strength,splitting tensile strength and flexural strength of concrete are summarized.The application of gangue concrete in engineering was also introduced.